It seems it answers many questions that a community member would have. For example, upon updating, you are greeted by a splash screen that tells gives you a change log of what things have changed. These will not satisfy the developers out there, but they will satisfy the everyday user, if they even really care about that information.

Furthermore, WordPress also has implemented a new tooltip thing for new features. I imagine users were getting lost in all the admin changes and rewrites and WordPress figured it would advantageous to guide the user through the new changes.

It makes me wonder why companies decide to make seemingly sweeping changes to their UI, without guiding their users through it. The end user is the most important part of this whole thing, and just dumping a new UI on them is not usually an optimal situation.